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Black Screen, Computer Won't Boot, No Bios, Help!


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#1 doodah12

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Posted 14 July 2008 - 09:32 AM

Computer was having heavy hiccups where it would start to reboot when running semi-intensive programs. I was going to reformat HD in a few days, and start over. But now the computer screen suddenly went black, if I reboot, nothing comes on the screen, and I can't get into BIOS. I hear nothing, no beeps, no post. The HD light comes on, stays solid, and goes off. and the floppy drive doesn't light up . Everything seems to be powering up. I reset the CMOS jumper, changed the CMOS battery, but still no post.
My CD and DVD drives light up, so I put in my XP install disk hoping to do a repair or install from that, but still no boot, just black screen and no beeps.
Computer was running well up until the hiccups, anti-virus was up to date, spyware, adware was under control.
Any help would be greatly appreciated.
Thanks,
Scott

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#2 hamluis

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Posted 14 July 2008 - 09:41 AM

Are all fans working?

Data about lights is better than nothing...I think fans are a better indication of PS/motherboard situations.

Louis

#3 doodah12

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Posted 14 July 2008 - 09:43 AM

All fans are working.

#4 hamluis

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Posted 14 July 2008 - 11:10 AM

If you have access to another system...

I would try the PS and the hard drive on a different system. Do not connect the hard drive as a boot drive, simply make it an additional drive.

I'd also try reseating the memory and the video card, if it has one. If onboard video, disregard.

Check all connections for a good fit.

Louis

#5 doodah12

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Posted 14 July 2008 - 02:34 PM

I will start to try those things tonight after I get home from work, thanks

#6 doodah12

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Posted 15 July 2008 - 12:33 AM

I reseated the ram and the videocard, and put the hard drive on my other system, and was able to access the drive and all the files. I have an extra PS, but won't have the time until a few days from now to install it and see if the problems get cleared up.

#7 hamluis

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Posted 15 July 2008 - 09:44 AM

Very good :thumbsup:.

Since you have another system...might as well try your video card in it (if it's compatible), no point in passing that up if possible.

Louis

#8 doodah12

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Posted 21 July 2008 - 09:43 AM

Hi,
I finally got around to testing some things. First I bought a power supply tester, and the PS checked out OK. I noticed the fan on my videocard wasn't turning, and tried it in my other system, I did get graphics, but the fan still would not turn, so it might be overheating. I ordered a new card and should be receiving it shortly.
I took out all peripheral cards, and tried starting with just ram, videocard (which because of the fan might not be 100%), and processor, but still didn't get any kind of beeps when starting the system. I removed the CMOS battery and reset the jumper, but still nothing.
Any suggestions, or should I start assuming it's either the mobo or the processor?

#9 hamluis

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Posted 21 July 2008 - 10:23 AM

Well...IMO, all the symptoms now point to a failing/failed video card.

All previous suggestions were made based on the premise that the vid card was properly functional...but that's not likely if it requires a fan and that fan has not been working.

Louis

#10 doodah12

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Posted 21 July 2008 - 03:48 PM

Well, my wife told me the videocard arrived today, so when I get home from work I'm going to install it, press the power button and PRAY!
I'll let you know how it goes.

#11 doodah12

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Posted 22 July 2008 - 09:41 AM

Well unfortunately, the new videocard did not change things. I'm guessing I have to get a new mobo.




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