I found a program to test video card memory, very similar to memtest. after running the test, i got these results:

[2/10/2011 2:16:44 PM] Test started for "Primary Display Driver (Radeon X1950 Pro Secondary)"...

Trying 16bpp RGB:565 mode...OK

Error at [063D200A]: must be FFFF, but found FEFF (bits: 0000000100000000)

Error at [061D200A]: must be FFFF, but found FEFF (bits: 0000000100000000)

Error at [061D200A]: must be FF00, but found FE00 (bits: 0000000100000000)

Error at [01EFCEBA]: must be FF00, but found FF80 (bits: 0000000010000000)

Error at [063D200A]: must be 5555, but found 5455 (bits: 0000000100000000)

Error at [01EFCEBA]: must be 0001, but found 0081 (bits: 0000000010000000)

Error at [00BB0F0C]: must be 0001, but found 8001 (bits: 1000000000000000)

Error at [01EFCEBA]: must be 0004, but found 0084 (bits: 0000000010000000)

Error at [00BF0F0C]: must be 0010, but found 8010 (bits: 1000000000000000)

Error at [01EFCEBA]: must be 0020, but found 00A0 (bits: 0000000010000000)

Error at [01AF0F0C]: must be 0020, but found 8020 (bits: 1000000000000000)

Error at [01EFCEBA]: must be 0100, but found 0180 (bits: 0000000010000000)

Error at [01EFCEBA]: must be 0200, but found 0280 (bits: 0000000010000000)

Error at [01EFCEBA]: must be 0400, but found 0480 (bits: 0000000010000000)

Error at [01EFCEBA]: must be 0800, but found 0880 (bits: 0000000010000000)

Error at [01AF0F0C]: must be 0800, but found 8800 (bits: 1000000000000000)

Error at [01EFCEBA]: must be 2000, but found 2080 (bits: 0000000010000000)

Error at [01EFCEBA]: must be 4000, but found 4080 (bits: 0000000010000000)

Error at [01AF0F0C]: must be 4000, but found C000 (bits: 1000000000000000)

Error at [0085200A]: must be FFFB, but found FEFB (bits: 0000000100000000)

Error at [061D200A]: must be FFF7, but found FEF7 (bits: 0000000100000000)

Error at [0CC63A88]: must be FFEF, but found FDEF (bits: 0000001000000000)

Error at [0CC63A88]: must be FFDF, but found FDDF (bits: 0000001000000000)

Error at [0085200A]: must be 7FFF, but found 7EFF (bits: 0000000100000000)

Trying 16bpp RGB:555 mode...OK

Error at [0DA7CA02]: must be 00FF, but found 00FE (bits: 0000000000000001)

Error at [07195EBA]: must be 0001, but found 0081 (bits: 0000000010000000)

Error at [07195EBA]: must be 0004, but found 0084 (bits: 0000000010000000)

Error at [06E49F0C]: must be 0004, but found 8004 (bits: 1000000000000000)

Error at [07195EBA]: must be 1000, but found 1080 (bits: 0000000010000000)

Error at [07195EBA]: must be 4000, but found 4080 (bits: 0000000010000000)

Error at [0646B00A]: must be FDFF, but found FCFF (bits: 0000000100000000)

Error at [0626B00A]: must be FDFF, but found FCFF (bits: 0000000100000000)

Error at [0DA7CA02]: must be EFFF, but found EFFE (bits: 0000000000000001)

Trying 16bpp BGR:565 mode...OK

Error at [07195EBA]: must be FF00, but found FF80 (bits: 0000000010000000)

Error at [07195EBA]: must be 0008, but found 0088 (bits: 0000000010000000)

Error at [07195EBA]: must be 0020, but found 00A0 (bits: 0000000010000000)

Error at [07195EBA]: must be 0400, but found 0480 (bits: 0000000010000000)

Error at [07195EBA]: must be 0800, but found 0880 (bits: 0000000010000000)

Error at [07195EBA]: must be 8000, but found 8080 (bits: 0000000010000000)

Error at [0C8FCA88]: must be FFFB, but found FDFB (bits: 0000001000000000)

Error at [086EB00A]: must be FDFF, but found FCFF (bits: 0000000100000000)

Error at [086EB00A]: must be BFFF, but found BEFF (bits: 0000000100000000)

Error at [0CA3CA88]: must be 7FFF, but found 7DFF (bits: 0000001000000000)

Trying 32bpp RGB:888 mode...OK

Error at [01595EB8]: must be FF00FF00, but found FF80FF00 (bits: 00000000100000000000000000000000)

Error at [01595EB8]: must be 00000001, but found 00800001 (bits: 00000000100000000000000000000000)

Error at [01595EB8]: must be 00000800, but found 00800800 (bits: 00000000100000000000000000000000)

Error at [01595EB8]: must be 00001000, but found 00801000 (bits: 00000000100000000000000000000000)

Error at [01595EB8]: must be 00010000, but found 00810000 (bits: 00000000100000000000000000000000)

Error at [01595EB8]: must be 00200000, but found 00A00000 (bits: 00000000100000000000000000000000)

Error at [01595EB8]: must be 04000000, but found 04800000 (bits: 00000000100000000000000000000000)

Error at [01595EB8]: must be 20000000, but found 20800000 (bits: 00000000100000000000000000000000)

Error at [01595EB8]: must be 40000000, but found 40800000 (bits: 00000000100000000000000000000000)

Error at [0CE3CA88]: must be FDFFFFFF, but found FDFFFDFF (bits: 00000000000000000000001000000000)

Trying 32bpp BGR:888 mode...OK

Error at [0D87CA00]: must be FFFFFFFF, but found FFFEFFFF (bits: 00000000000000010000000000000000)

Error at [00F95EB8]: must be 00000002, but found 00800002 (bits: 00000000100000000000000000000000)

Error at [00F95EB8]: must be 00200000, but found 00A00000 (bits: 00000000100000000000000000000000)

Error at [02C3CA88]: must be FFFFFFFE, but found FFFFFDFE (bits: 00000000000000000000001000000000)

Error at [0D87CA00]: must be FFFFFEFF, but found FFFEFEFF (bits: 00000000000000010000000000000000)

Error at [02AFCA88]: must be FFFEFFFF, but found FFFEFDFF (bits: 00000000000000000000001000000000)

Error at [02AFCA88]: must be F7FFFFFF, but found F7FFFDFF (bits: 00000000000000000000001000000000)

[2/10/2011 5:16:21 PM] Pass completed (60 errors found).

now because there are only 60 errors, is there some way to repair or block these bad bits?