HP BIOS assumed bad or corrupt (Can't boot) Getting power

June 26, 2012 at 22:03:55
Specs: Windows XP, AMD Athlon 64X2
I have an HP Pavillian m7580n desktop PC running XP. I can't boot up, my monitor doesn't respond, my wireless keyboard and wireless mouse don't respond. I changed the processor but nothing has changed. The DVD light comes on and flashes, and the fans work. I am assuming that the BIOS is bad. Is it possible for me to download software on my laptop to help me fix the BIOS on my desktop PC? Thanks!

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June 27, 2012 at 07:26:20
Have you tried troubleshooting any other hardware? I've seen these symptoms before and I have typically been able to fix it by replacing or removing the bad RAM.

A quick way to test this is to take all of the RAM out except 1 stick and turn the comptuer on. If you get video on your screen, that stick is ok. turn it off and add another stick, if it works that one is ok too. If it doesn't thats the bad one. Continue this process until you have tested all of your RAM.

There are other things that could be wrong; for instance, it could be the RAM slot on the mobo. But for your needs, you either need to know if it works or it doesn't, not what part doesnt work.

If it still doesn't work after testing all of the RAM, there could be bigger issues (or ALL of your RAM is bad...), but the next step would be to disconnect all of the un-necessary hardware from your motherboard (i.e. dvd drive, any pci cards, secondary hdd, card readers, etc.) and try turning the computer on to see if it works. If it does turn on, it must be one of the hardware components. Troubleshoot them by adding them one at a time and try turning on the computer until you find the one that prevents the computer from turning on.

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June 27, 2012 at 15:05:51
There is unlikely to be anything wrong with the BIOS on your system.
Troubleshooting such a failure begins with the powersupply. The fact that some fans spin and DVD lights flash, is no guarantee the powersupply is actually working. The PSU provides power through at least three separate voltage rails and any one of those can fail while leaving the others working.
You will also need to use PS/2 keyboard & mouse for troubleshooting purposes as wireless devices require software drivers which are only activated after the operating system boots.
Unless you have access to compatible spare parts including powersupply & CPU you may be better off taking the system to a tech to have the problem professionally diagnosed. If you have another compatible powersupply that you know is working then start by swapping that. Disconnect all power & data cables from drives. Leave only one stick of ram. Unplug all USB devices and leave only motherboard, CPU with fan, Graphics card unless there is onboard graphics, & keyboard. Now turn on power and try to boot. Do you get anything onscreen?
Do you get any BIOS beeps?
If you still get no response with a known good powersupply then you have either a failed CPU or motherboard. It is at this point you need to decide whether it is worth investing money into it.

Goin' Fishin' (Some day)

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June 28, 2012 at 15:26:34
I didn't want to leave you thinking I wasn't going to respond to you (Been busy with other things) so here's what's happening. I swapped out the Memory sticks and tried different sockets but nothing changed. Now I'm in the process of trying to swap out the power supply. I do have another one from an old computer I use to use but the connections that feed the mother board aren’t correct, so that won’t work. I'm now going to check around to see if I can find the same type as the one I want to replace. If I can get it cheap enough I'll take a gamble on it. (Maybe on craigslist) Since I'm not getting any difference with either of the only two memory sticks I think it's unlikely that both would go bad at the same time. So I’ll assume they are good for now. And since you mentioned that it’s unlikely that the BIOS is the problem it appears to me to be worth a gamble on the power supply. Do you agree?

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Related Solutions

June 28, 2012 at 15:43:27
When a computer fails to boot the power supply is the first component to suspect. The BIOS is the very last, something you only think about when all else as failed.

Until the power supply is definitely eliminated as the problem then you can not really go any further. The only way to do that is to ruse a known good PSU.

If you do buy a new power supply don't get the cheapest you can find, it is a false economy. Get a good one that has at least 25 Amps on the 12 V rail. Avoid PSU with multiple 12v Rails.


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June 28, 2012 at 17:44:12
I want to thank you for your reply to my computer problem. I've tried all that you mentioned but I still have the same issue with it. I'm considering changing out the power supply if I can get one cheap or possibly buying a used computer (Same kind). Maybe I can use it for parts or change computers. This computer is rather old so I am hoping I can pick one up cheap. Thanks for your help!

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June 28, 2012 at 17:53:48
Thanks Stuart! I'm assuming I have to replace the PSU with the exact replacement in order to get the correct connection to the motherboard. Is this correct? The poutput on this one at 12v is 19 Amp, at 5v 30 Amp, and at 3.3v 28 Amp. I have anothe PSUbut the connection doesn't fit the motherboard and theoutput at 12v is only 9 Amp.

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