Checksum Error - System will no longer boot. Please Help!

tjmaxwell

Golden Member
Dec 17, 2001
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Lately, my computer has had some issues, but now, I can't get it to boot at all.

I'm running Win XP Pro on an Intel 875 reference board with P4 3.0, 1 GB RAM, Radeon 9800 Pro, etc. The machine has run beautifully for the past six months or so. However recently, when I booted the machine, the splash screen would show, then disappear, then show, then disappear in and endless cycle. Usually, powering down would solve this, though my machine would say that it had "recovered from a serious error" each time. When I went through Windows' diagnostics, it said it had something to do with a device driver, but couldn't elaborate (not very helpful).

Then, a few days ago, I got an error that I can't really recall which said something about my RAM timings being set to their lowest levels. The machine booted fine after that, and I didn't run into future problems until today.

Today, I powered it on and it said something about a checksum error or "not found" and prompted me to hit F4 to enter setup. I did so and exited without changing anything. Afterwards, the splash screen shows, the drives spin, but the machine hangs blinking a cursor on a black screen. I've tried rebooting, powering down, nothing would work. So, I went back into BIOS and chose "optimal defaults", saved, then exited. Still, same problem.

Any suggestions? Thanks.
 

johnjkr1

Platinum Member
Jan 10, 2003
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If it sits at a screen with a blinking cursor, that means that it is not booting. There are many reasons for that, your hard drive might not be detected, your OS may be hosed, your bios boot settings could be wrong. I would check those first.
 

Zepper

Elite Member
May 1, 2001
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Possibly a dead CMOS battery. That's the first thing I would check. Replace battery and clear CMOS.
.bh.
 

tjmaxwell

Golden Member
Dec 17, 2001
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Thanks for the responses. I'm not that knowledgeable about these types of things. Can you please tell me what specific things in the BIOS to check for? How could it all of a sudden not recognize the hard drives? Also, where do you get a CMOS battery and how do you swap it out? Thanks again.