When you turn the computer watch the cpu fan. Does it turn at all? If it is not turning then there could be a power problem to the power connector on the motherboard. The thermal paste comes in a tube and looks like silicone. It usually comes with the new heatsink/fan combo. Sometimes the thermal paste is already installed on the heatsink. It goes on the surface where the heatsink makes contact with the top of the processor. If this stuff is not on there the cpu may overheat and get damaged. Usually the computer will do nothing if the cpu is burned up. Will not turn on or anything when the power button is pressed. Have you tried to re-set the BIOS? The other fan going out may have caused the BIOS to lock the computer up to protect the cpu from damage. Look on the motherboard for a set of tiny pins with a little tab on it. These are called jumper pins and they should be located somewhere near the watch battery on the board. The tabs needs to be removed and re-installed on opposite set of pins for 10 seconds then placed back onto the other pins.There is usually only 3 or 4 pins max. If you cannot find them you could try pulling the battery out for 10 seconds and then re-installing it. I advise you try the jumper before removing the battery. Make sure you are doing this with the power disconnected.
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Thermal paste is applied between the heatsink and the cpu heat spreader or die. If you removed the heatsink to replace the fan you should have applied new thermal paste to the cpu or you may have burned it up. Try clearing the bios like dageezer said. Look for a jumper pin near the onboard battery to clear the cmos.
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Check for an event log in the BIOS, and clear it
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It won't start up. I get the blue HP screen and then the system error.
I'm not sure what thermal past is. I took out the fan, went to Fry's and bought the exact same thing.
Nothin'....
Hi --
Both have three wires. I plugged the new fan into the old space. I could barely reach it but kept trying and got it.
No, it doesn't. Someone wrote that there was "thermal paste" under the heat sink (sync?) and that the fan probably burned up because I didn't apply thermal paste to the new one. Either way, my computer is still toast!
Got any suggestions?
How many wires does your new cpu fan have? The BIOS uses a four wire motor due to it needs the rpm reading that fan provides. Even though you new cpu fan may be working the BIOS may think it is not if it does not get the rpm reading and shut down. Also make sure the cpu fan is connected to the correct fan connector on the board. The mother board may have a system fan connector near the cpu and it might be plugged into it the sys fan connector instead of the cpu connectyor.
So--does the new fan work?
Did you use thermal past when inserting your new heat sink and also.... When your computer starts , go into the bios and check the temperature under system health or similar tab. If it keeps rising , there is probably a fan problem. If it does not rise , you could probably just set in the bios not to warn you of fan failure but remember to keep your shutdown temperature just in case.
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