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Ok, I have this stupid HP Pavilion P4 1.6, TNT2 M64, 512MB DDR in the shop...won't boot. No display whatsoever. The video card is good, as I have it running in a spare system now. I have no clue where else to look...the only other thing I can think is a bad proc...but this system has been running fine for 2 years. Any suggestions?
You didn't mention which Pavilion model you have. Go here and select your Pavilion model. There are a couple to choose from. :D
There might be drivers, BIOS upgrades, manuals, etc. available.
Drivers and BIOS upgrades are useless, as the system will not boot. For reference, however, the model is a 750nQuote:
Originally posted by DonJ
You didn't mention which Pavilion model you have. Go here and select your Pavilion model. There are a couple to choose from. :D
There might be drivers, BIOS upgrades, manuals, etc. available.
Yah, dip switches... was the bios passworded? If so HP's have a bank of dipswitches for removing it, leave them in the wrong position and no workeee - also get user dead to rights on trying to remove admin passwords :D
Hmmm...that's a possibility, but this is a private machine - my boss's. He said his wife tried to uninstall AOHell and when it told her to reboot, it didn't work anymore.Quote:
Originally posted by NooNoo
Yah, dip switches... was the bios passworded? If so HP's have a bank of dipswitches for removing it, leave them in the wrong position and no workeee - also get user dead to rights on trying to remove admin passwords :D
CIH ?
from Acronymfinder: Caffeine-Induced Hysteria ?Quote:
Originally posted by NooNoo
CIH ?
I think she means
http://www.symantec.com/avcenter/venc/data/cih.html
I fear the reference is to a chernobyl-type virus or variant...?Quote:
Originally posted by Ya_know
from Acronymfinder: Caffeine-Induced Hysteria ?
That makes more sense...
Do you hear any beeps at all during power up?
Can you boot from a floppy during power up?
I take it you can't enter the BIOS at all. When the blue HP Logo screen appears, press the F1 key on the keyboard to enter the HP BIOS Setup menu.
Go here for the parts breakdown for your Pavilion. Click on List All Parts...unfortunately, it doesn't list your MoBo or power supply.
Just as an FYI, Pavilion 750n Product Specs.
Just a couple suggestions...sorry I couldn't help out more.
One more thing:
Use the following steps to start Windows XP in Safe Mode when the computer is already off:
Turn on the computer.
Press the F8 key repeatedly when the first screen appears.
From the Windows Start-up menu, select Safe Mode and press ENTER
When the Windows XP desktop appears, Safe Mode is displayed in the four corners of the screen and the desktop will probably look much worse due to the reduced colors.
but I could see how Caffeine-Induced Hysteria could cause severe pc problemsQuote:
Originally posted by Ya_know
That makes more sense...
Thanks for the offer, but like I already said, the machine WILL NOT boot WHATSOEVER...Quote:
Originally posted by DonJ
One more thing:
Use the following steps to start Windows XP in Safe Mode when the computer is already off:
Turn on the computer.
Press the F8 key repeatedly when the first screen appears.
From the Windows Start-up menu, select Safe Mode and press ENTER
When the Windows XP desktop appears, Safe Mode is displayed in the four corners of the screen and the desktop will probably look much worse due to the reduced colors.
The fans turn and a couple of lights blink...also the video card is not bad b/c I have checked it in a spare system. I can't even get to the post screen, let alone the boot menu. I'll worry about safe mode when I get something, anything to come up on the display.
Noo - checked for DIP switches - I don't even see a clear CMOS jumper, at least not right off the bat. The board is stamped as a P4B266-L, which I thought was weird, b/c I thought HP used crapware usually...anyway, it looks like a runt P4B...only 3 pci slots, and it has the spot for an expansion card or whatever it is...Also did some research on chernobyl...everything I have seen says that chernobyl does not affect nt-based os'es...they were running XP (home, I assume)...still no headway.
well, as a last resort, unplug the machine and remove the mb battery for a while..see if a reset to the cmos will work.
hp and compaq have been using custom ASUS boards for some time now.
I like geoscomps suggestion to pull the battery. it might also be prudent if possible to pull everything and remove the board from the case and try to run it on the bench with just video ram and pocessor.
see if you can get the sucker to beep if you yank the video card and power it on, same with RAM. that will give some indication of whether the processor is okay.
True that...will try it and let you know.Quote:
Originally posted by kato2274
hp and compaq have been using custom ASUS boards for some time now.
I like geoscomps suggestion to pull the battery. it might also be prudent if possible to pull everything and remove the board from the case and try to run it on the bench with just video ram and pocessor.
see if you can get the sucker to beep if you yank the video card and power it on, same with RAM. that will give some indication of whether the processor is okay.
I've had 2 HP's in the shop this past week. Both not showing a screen, and not posting. Think both have bad psu's. Proprietary psu's also
Although I haven't had this specific problem on a HP, I have had it a lot with 3rd party computers (more so with AMD MB) Replacing the motherboard always took care of it.
Not really an option here...custom mobo, proprietary PSU...he will probably be getting a barebones and scavenging what he can. It's got an 80gb HD, cdrw, dvd, 512mb ddr266...so it will have a little to contribute to its offspring.Quote:
Originally posted by jfesler
Although I haven't had this specific problem on a HP, I have had it a lot with 3rd party computers (more so with AMD MB) Replacing the motherboard always took care of it.
Can you locate a part number for that power supply? They are usually in the form of 0950-xxxx or 5185-xxxx. Quite often, HP's supplies can be replaced with a suitable generic substitue.
Check out HP Cross-Reference. Perform a Ctnl-F...enter 750. It finds a Pavilion 750 CTO...but I don't believe this is the same as a 750n. :confused:
I think so...is it that funny writing on the back? The one that says "115v"?Quote:
Originally posted by DonJ
Can you locate a part number for that power supply? They are usually in the form of 0950-xxxx. Quite often, HP's supplies can be replaced with a suitable generic substitue.
Funny guy...Quote:
Originally posted by Archangel42069
I think so...is it that funny writing on the back? The one that says "115v"?
Another FYI: HP Pavilion - Motherboard Specifications, ASUS P4B266-LA.
Looks like it comes with S3 Power Management Support.
EDIT: Getting back to the power supply...is it possible that it is a 0950-4104? Specs: 200 watt power supply (HV, power factor correction (PFC), Bestec ATX-1956F) - 100-127VAC and 200-240VAC input (switch selectable), 50/60Hz - Total of either 7 or 8 output connectors (either version will work properly)
Actually, that would be the one...I googled it a couple of hours ago...we aren't interested in spending cash on a replacement if we aren't sure though...and since I don't happen to have another p4-ready psu lying around...there is no way to test it.Quote:
Originally posted by DonJ
Another FYI:
HP Pavilion - Motherboard Specifications, ASUS P4B266-LA. Looks like it comes with S3 Power Management Support.
EDIT: Getting back to the power supply...is it possible that it is a 0950-4104? Specs: 200 watt power supply (HV, power factor correction (PFC), Bestec ATX-1956F) - 100-127VAC and 200-240VAC input (switch selectable), 50/60Hz - Total of either 7 or 8 output connectors (either version will work properly)
Looks like these guys have them for $50, plus shipping.
It has an Important Note concerning the "P8" 4-pin connector.
The first thing to do is check the capacitors on the board. If you see any of them, large or small, that are pushed up then you have a bad board. They should all be flat. ANY rise in the capacitors will result in your problem.
Second. Unplug all devices from the powersupply. That includes modmes, networkcards etc....Just have the video, memory and CPU plugged in. If it boots, then begin replacing the cards and plugging things back in. If it's a crad then it's probably a modem or network card causing the problem.
Take the CPU out and re-seat it.
If you still have no power then most likely it's a bad powersupply or something else on the board.
leaky capacitors
http://www.spectrum.ieee.org/WEBONLY...eb03/ncap.html
It has power, just won't boot. I'm gonna try it outside the case and see what happens. It looks, though, like studio has the right idea. The idea was nagging at the back of my head, but I couldn't figure out why I thought that, so I didn't check it.Quote:
Originally posted by notsobetter
The first thing to do is check the capacitors on the board. If you see any of them, large or small, that are pushed up then you have a bad board. They should all be flat. ANY rise in the capacitors will result in your problem.
Second. Unplug all devices from the powersupply. That includes modmes, networkcards etc....Just have the video, memory and CPU plugged in. If it boots, then begin replacing the cards and plugging things back in. If it's a crad then it's probably a modem or network card causing the problem.
Take the CPU out and re-seat it.
If you still have no power then most likely it's a bad powersupply or something else on the board.