AcerPower F1 PC Desktop Problem

you will have to test the CPU on another machine ...remove all other connections and attach only the monitor

Blinking amber (orange) indicates a problem with the power supply inside the computer. If the system cannot boot and there is a solid amber light, this could indicate a problem with the power connections for the CPU on the system board (see "Power Problems" in your Owner's Manual).

on screen says "no signal", both green & red diode light are up :

plug vga cable tightly else check with new vga card

That's not a problem. One light(Green one) is for power and another (Red one) is for Hard Disk. Red one will blink continuously, if hard disk is being accessed.

More likely it's from overheating; if it would be from the power supply ithe shutdown would be more random.
But it could also be a malware infection - especially if it happens EXACTLY after the same amount of time . Check what processes are active just before shutdown .

This could be a variety of things, but a lot of CPU's will do this if you have a disk in the disk drive or even a thumb drive. Worst case is you have a failed hard drive and you could may need to reinstall windows to get it working. Good luck

Make sure your monitor is connected to the proper video connection- that is if you have a video card in your machine and a video connection on your motherboard. If you connected to the motherboard and you have a video card -your screen will show nothing even though you are powered up. Dont know your situation, but just checking. Ive seen others do this.

Char S.

techguru 2009: First thing disconnect all power. Remove all drives (hard drive, CD/DVD, Floppy). Then remove all PCI cards. Also slowly remove the Memory cards. You should only have the motherboard w/processor and the power supply connected, do not connect the monitor or mouse\keyboard. If you have a CMOS battery also remove it. Careful turn the power on, you should hear several beeps. That is letting you know that there is no memory installed. Turn power off disconnect power cord. Slowly install the memory cards, keyboard, mouse, monitor. If you have a pci video card install it now. Turn power on. you should see the bios loading then error message there is no disk or operating syste. turn power off and start connecting one device at a time so your bios can recognize it. This should let you know if you have faulty hardwareby isolating each install. If you still have problems let me know.

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Make a windows 98 startup disk by downloading it from here http://ru.dod.net/ben/boot98.exe . Once you haver done that turn off the acerpower insert the disk and turn it on (make sure its set to boot from floppy disks in bios setup) Choose the option start computer with cd rom support. Now after about 1 minute youy should see a:\. Type in a:\fdisk and then choose yes and then create a partiossion using the prompts given . Once you have done that and its finished it should say you must restart this computer so restart it. Then boot from the floppy disk again and when it coms to a: type FORMAT C: and then press y. Once its done take the floppy disk put and restart your computer with the windows xp disk in and it should start installling windows xp.