Wont boot. posted by alucard2563 on Apr 11, 2008 Report abuse when i power up my pc i receive a dual quick beep, then a screen that informs me it is checking the system coolant fan. then that the fan is not operating correctly and my system is halted. but the fan turns on as i hit the power button but slows down or stops after the beeps. This was my previous question, i appricate the try on the answer but i have replaced the system fan and also the CPU fan, even went into BIOS and told it to be false on system manage fan. or something to that degree. please help.

normally this happens if your MB sensor circuitry is not detecting the correct speed of your fan or the correct temp of your system and proc. Try to Load the default settings of your bios and test again. if still having same problem what I suggest is check the 12volts output and 5 volts output of your PSU. To check it you need a Multimeter set to DC volts and put the negative probe to the black wire in a standard PSU plug and the red probe to the yellow cable (for 12v) and for the 5 volts just transfer the red probe to the red cable. If you have the correct voltage output, you have to hot wire your Proc Fan to get DC supply directly from your PSU. Your Proc Fan normally runs using 12volts DC.



Hope this helps. normally this happens if your MB sensor circuitry is not detecting the correct speed of your fan or the correct temp of your system and proc. Try to Load the default settings of your bios and test again. if still having same problem what I suggest is check the 12volts output and 5 volts output of your PSU. To check it you need a Multimeter set to DC volts and put the negative probe to the black wire in a standard PSU plug and the red probe to the yellow cable (for 12v) and for the 5 volts just transfer the red probe to the red cable. If you have the correct voltage output, you have to hot wire your Proc Fan to get DC supply directly from your PSU. Your Proc Fan normally runs using 12volts DC.

Hope this helps.