Aspire ATC-605-UR2S
BIOS: P11-A3L
Windows 7 SP1 with updates
I replaced the Motherboard which had a burned spot (smoked and stunk) due to a short in a USB cable. The refurbished motherboard (direct from China) via Newegg works perfectly with 2 exceptions: 1) It failed to restart during the new install of Windows 7 (several restarts were required). Powered off by holding the power button down and manually restarting got me through the install. It continues to do this every time it needs a software restart. This includes a restart after BIOS update.
2) I tried to repace the BIOS with a newer version but this MOBO has version P11-A3L (L standing for Linux) and that version can only be installed using a USB - Dos boot. After preparing a USB bootable drive with Free-DOS, the computer refuses to see the DOS operating system when I hit F12 and select the correct USB boot drive. It then skips right past it booting into Windows 7 off the hard drive. When I choose the P11-B4 version (no L on the end) which uses a Windows boot to perform the BIOS upgrade, it says I have the wrong version and that the existing BIOS ID does not match. BIOS settings for the install were correctly adjusted per the AMI install pdf accompanying the BIOS download.
I have replaced the Power Supply thinking that might have been and issue, but it did not cure the problem.
I need help from someone at Acer that has had experience with these issues. Could this be a bad Motherboard?
