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#1-TuffTEST-Lite™ PC Diagnostic
Version 1.53 
Product Description

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.... FREE PC

Product Description
Tests & Functions | Download Info
#1-TuffTEST | #1-TuffTEST-Pro

Product Description


We have purposely put the download button for #1-TuffTEST-Lite at the bottom of this Product Description in the hopes that it would encourage you to read, or at least skim, the Product Description prior to downloading it.

#1-TuffTEST-Lite is the "Free Download" version of our #1-TuffTEST™ Automatic PC Diagnostics product for end users.   While some tests have been slightly limited in scope, as shown below, it is a fully functional Freeware PC diagnostic utility that has no time limit or restrictions on its use.

  Test or Function

1. Extended Memory Tests     Up to 8 MB   Up to 3.5 Gigabytes
2. Fixed Disk Tests     Up to 540 MB   Up to 2000 Gigabytes
3.  Parallel Ports Tested   One   Up to Three
4. Serial Ports Tested   One   Up to Four
5. Test Sessions Saved   One   Up to Five
6. Test Mode   Single Pass   Single Pass or Continuous
7. Technical Support   None   Free and Unlimited

All #1-TuffTEST products are unique in their approach because they have their own proprietary boot-loader and operating system. Simply turn off the target PC, put the Program CD-ROM into the CD-ROM Drive or the Program Diskette into the Drive A and then turn on the target PC. It will boot the target PC and thoroughly test its basic hardware without interference from the target PC's native operating system.

A complete licensed version of #1-TuffTEST for end users costs only $9.95. Or, for more powerful professional-level PC diagnostics, a #1-TuffTEST-Pro™ license costs only $29.95. In order to offer these unique tools at prices this low, they can ONLY be purchased online through our easy to use and fully automated "ultra secure" ordering system.

Automatic, Inexpensive, and Powerful

#1-TuffTEST-Lite is the first PC diagnostic software product that can automatically test the major hardware components of any Intel-based, or compatible, desktop PC. Best of all, you can download #1-TuffTEST-Lite for FREE!

#1-TuffTEST-Lite is specifically designed for use by PC end-users and less experienced PC support/service people. The powerful and comprehensive tests that comprise #1-TuffTEST-Lite are derived from #1-TuffTEST-Pro, our industry-leading, professional-level diagnostic software product.

The "Stand-Alone" Advantage

#1-TuffTEST-Lite is a "Stand-Alone" diagnostic program that has its own proprietary self-booting operating system. Simply turn the target PC off, insert the #1-TuffTEST-Lite Program CD-ROM into the CD-ROM Drive or the Program Diskette into the Drive A, turn the target PC on and #1-TuffTEST-Lite will boot and take complete control of the target PC. This "Stand-Alone" advantage allows #1-TuffTEST-Lite to operate directly on the PC's hardware without interference from the target system's native operating system. Thus precise and highly reliable test results are consistently achieved.

In contrast, most other utility and diagnostic software products operate as an application program "under" the native operating system (DOS/Windows/etc.). Some even have to be installed on the fixed disk before you can use them. While this approach is effective for software and hardware "configuration" issues, attempting to diagnose "hardware malfunctions" through all the various layers of operating system and application software dramatically affects the quality and reliability of the tests.

Safety First

Unlike other diagnostic products, #1-TuffTEST-Lite is completely safe for use by anyone, even total PC novices, as it does not contain any tests or functions that could change a PC's system settings or overwrite data on its fixed disk drive.

No Training Required

Best of all, #1-TuffTEST-Lite is very easy to use-with no training required! As stated above, simply turn the PC's power off, put the Program CD-ROM into the CD-ROM Drive or the Program Diskette into the Drive A and turn the power on. #1-TuffTEST-Lite will then boot the PC and load itself into lower memory.

Once the Main Menu appears, if no key is pressed within 10 seconds, the complete set of System Certification Tests will run automatically. At the end of the Test Session, a simple "ok" or "FAIL" is reported for each test in the Certification Test Results display. This report can be printed, and/or saved to the Program Diskette for later viewing or printing.

Unique Architecture Means Better Testing

#1-TuffTEST-Lite is written in assembly language (instead of a high-level language such as C). Therefore, it is very compact, executes much faster, and is more precise. It uses less than 125K of main memory when loaded, and automatically relocates the program in main memory during memory testing. Thus all of main memory is tested! This is not possible with the much larger native operating-system-dependent programs that use most or all of main memory when loaded.

#1-TuffTEST-Lite uses its own proprietary operating system, is self-loading, and is designed to load successfully in systems with suspected hardware malfunctions. Thus it can test a PC system regardless of its native operating system (DOS, Windows, Unix, Linux, OS/2, etc.). You can even troubleshoot a PC with no fixed disk drive!

#1-TuffTEST-Lite utilizes its own custom device drivers so that diagnostic routines interact directly with the PC's hardware. This produces precise and reliable test results that are unaltered by native operating system error recovery routines and eliminates the false positives and negatives so common with DOS/Windows-based utility-type diagnostic products.

Thorough and Very Rigorous Tests

A #1-TuffTEST-Lite Program CD-ROM and Program Diskette contains multiple diagnostic programs in compressed format. Each program is custom written for a specific microprocessor/bus combination. As #1-TuffTEST-Lite loads, the microprocessor/bus combination of the target system is analyzed, and only the appropriate diagnostic program for that system is expanded and loaded into main memory.

#1-TuffTEST-Lite is comprised of the most thorough and rigorous set of diagnostic tests and functions for Main Memory, the first 8 MB of Extended Memory (#1-TuffTEST tests Up to 3.5 Gigabytes), the first 540 MB of EIDE, IDE, SCSI, ESDI & ST506/412 Fixed Disk Drives 0 & 1 (#1-TuffTEST tests up to 2000 Gigabytes), Diskette Drives, Video Displays and Adapters, and one Serial interface (#1-TuffTEST tests up to four) and one Parallel Interface (#1-TuffTEST tests up to three). These comprehensive tests provide extremely reliable results.

Tests and Functions

If automatic testing is not desired, a Test Session can be scripted by toggling any of the following tests ON/off. The default is all tests ON.  Note, all #1-TuffTEST tests and functions are available except where noted below.

  • System Board Tests
    • Microprocessor
    • Math Coprocessor
    • DMA Controller
    • Real Time Clock
  • Video Alignment Aids
    • Cross-Hatch Pattern
    • Dot Pattern
    • Vertical Bars Pattern
    • Horizontal Bars Pattern
    • Text Color Chart
  • Video Adapter Tests
    • Verify Screen Memory Test
    • Character Set Test
    • Video Attributes Test
    • Fill Display Test
    • Cursor Addressing Test
    • Video Memory Test
    • Hi-Res Color Test
    • Text Resolution Test
  • Parallel Port Tests (LPT1 only)
    • LPT1 Test
    • LPT2 Test (#1-TuffTEST only)
    • LPT3 Test (#1-TuffTEST only)
  • Serial Port Tests (COM 1 only)
    • COM 1 Test
    • COM 2 Test (#1-TuffTEST only)
    • COM 3 Test (#1-TuffTEST only)
    • COM 4 Test (#1-TuffTEST only)
  • Diskette Drive Tests (drives A & B)
    • Reset Drive Test
    • Rotational Timing Test
    • Seek/Read Test
    • Read Only Test
  • Fixed Disk Tests (drives 0 & 1) (limited to 1st 540MB, #1-TuffTEST tests up to 2000 Gigabytes)
    • Controller Test
    • Seek (Hysteresis) Test
    • Surface Analysis Test
  • Main Memory Tests *
    • Allzeroes Test (includes Parity Module Test)
    • Allones Test (includes Parity Module Test)
    • Checkerboard Test (includes Parity Module Test)
    • Address Test (includes Parity Module Test)
    • Walking Ones Test (includes Parity Module Test)

* Note: when any of the Main Memory Tests are run, #1-TuffTEST-Lite is automatically relocated on each pass (from the lower portion of main memory to the upper portion of main memory and then back again). This insures that ALL of main memory is rigorously tested. This unequaled ability to test the lower portion of main memory (that is normally occupied by the operating system and operating system dependent programs) is vitally important because this is the most used portion of memory and, therefore, the most likely area to fail.

  • Extended Memory Tests (limited to 1st 8 MB, #1-TuffTEST tests up to 3.5 Gigabytes)
    • Allzeroes Test (includes Parity Module Test)
    • Allones Test (includes Parity Module Test)
    • Checkerboard Test (includes Parity Module Test)
    • Address Test (includes Parity Module Test)
    • Walking Ones Test (includes Parity Module Test)

#1-TuffTEST-Lite supports desktop PCs that use Intel Pentium 4, Pentium III, Pentium II, Pentium Pro, Pentium, i486, 80386, and compatible AMD and Cyrix processors with Industry Standard Architecture (ISA), Enhanced Industry Standard Architecture (EISA), VESA Local Bus (VLB), and Peripheral Component Inter-connect (PCI) bus configurations.

#1-TuffTEST-Lite will test all types & sizes of memory including RDRAM, PC150 SDRAM & DDR SDRAM.

Options and Functions

If automatic testing is not desired, the Main Menu has the following options:

  • System Configuration Information - This option indicates the hardware resources that are functioning, i.e., identifiable in the system, and also provides information about the system's BIOS and CMOS settings. In addition, a CPU Speed Test is performed, MMX Extensions are tested and a BIOS Checksum Test is performed. This System Configuration Information can be viewed or printed.
  • Certification Test Selection Menu - This option enables scripting of each Test Session by allowing individual tests for each system component to be toggled ON/off. Upon completion of the customized Test Session the Certification Test Selection display becomes the Certification Test Results display with ok/FAIL posted to the selected tests. The results can be printed and/or saved to the Program Diskette. Each saved Test Session includes the Test Results and System Configuration.
  • Prior Test Results - This option allows a previously saved Test Session to be viewed, printed or cleared (the licensed version of #1-TuffTEST for ONLY $9.95 allows up to 5 previous Test Sessions). Each Test Session includes the Test Results and System Configuration information.

What Doesn't #1-TuffTEST-Lite Do?

Now for the next logical question, "what doesn't #1-TuffTEST-Lite do"?

As stated earlier, #1-TuffTEST-Lite, with its own boot-loader and operating system, is a highly specialized diagnostic software "tool" that provides superior "hardware" testing because the target system's native operating system is never used or called into memory.

Thus, #1-TuffTEST-Lite can directly test major system components such as memory, fixed disk drives, diskette drives, serial & parallel ports, video, keyboard, etc. False positives and false negatives that can be induced by the system's native operating system are eliminated.

However, since the PC's native operating system is not available to #1-TuffTEST-Lite, it cannot use the operating system's functions or interact with the various devices that, due to their proprietary design, are not supported by the PC's BIOS. Examples include pointing devices, CD-ROM drives, sound cards, network cards, etc. These devices require the availability of their own special native operating system-based software drivers and only a utility that runs under the system's native operating system can see and interact with these drivers.

Since numerous operating system-based diagnostic utilities have always been available to see, exercise and resolve conflicts with these devices, #1-TuffTEST-Lite has remained specialized in doing what it does best - directly and rigorously test the PC's basic hardware.

Our customers recognize this and use #1-TuffTEST-Lite in conjunction with, not instead of, operating system dependent products such as Norton Utilities, Nuts & Bolts, CheckIt, QA-Plus, PC Doctor, etc. They use #1-TuffTEST-Lite to reliably test the system's basic "hardware" and DOS/Windows-based utility products for help with configuration issues and conflicts.

Technical Support

Since #1-TuffTEST-Lite is free, the technical support that is available for #1-TuffTEST and #1-TuffTEST-Pro, is not available for #1-TuffTEST-Lite.

Outstanding Diagnostic Values

#1-TuffTEST-Lite is FREE - so why not download one today! A complete licensed version of #1-TuffTEST for end users costs only $9.95 and for more powerful professional-level PC diagnostics, a #1-TuffTEST-Pro license costs only $29.95. No one's set of diagnostic tools is complete without a #1-TuffTEST product.


#1-TuffTEST-Lite is only distributed via download. The download files are located in the #1-TuffTEST-Lite User Area, which will also give you a preview of how easy it is to download and use the #1-TuffTEST-Pro and #1-TuffTEST products.

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#1-PC Diagnostics Company
25 Bellam Blvd, Suite 250, San Rafael, CA 94901
phn (415) 456-2200 ~ fax (415) 456-2244

E-mail us at: 1pcdcsales@tufftest.com

Site established 01-Nov-1996
Page last updated 17-Nov-2007

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