She had problems with Windows loading and when it did load. The computer would freeze after a couple of minutes. I noticed that the hard drive would show up in BIOS every now and again. So I thought it was most likely a faulty SATA cable or hard drive.
I've now tried a brand new hard drive and SATA cables but still have the same problem. I noticed when the computer is left unplugged for 30 seconds or so. The hard drive will show up in BIOS the very first time you turn on the computer. When I exit and enter BIOS again, the hard drive will not show up. It also does this for the DVD drive too. Whether the hard drive is connected or not.
I've cleared BIOS and changed the CMOS battery. Everything looks good on the motherboard. I've completely unplugged it and replugged it back in. Reseated the RAM etc but nothing.
I've came across a thread from a year ago about this Acer AX3400. The guy had the exact same problem I have with this machine. I'm guessing it's a fault with the motherboard. The motherboard seems to be generic, no manufacturer name on it. It's also strange that Acer doesn't list this model on their website. Even though it's only 3 or so years old.
Is there anything else I can do? I think I've tried everything.
Any help would be greatly appreciated.