If your computer fails to complete a Power-On Self-Test (POST) after adding hardware modifications or altering configuration settings, execute a physical CMOS purge: Disconnect the AC power cord from the power supply unit.
Intel Socket LGA 1155 (Ivy Bridge and Sandy Bridge); supports up to Core i7-3770 . acer ipimbar rev 102a manual top
1x PCI Express x16 (Version 3.0 with Ivy Bridge CPUs; 2.0 with Sandy Bridge). 3x PCI Express x1 (Version 2.0). If your computer fails to complete a Power-On
Headers for Audio, USB (2 headers), and the standard Front Panel control (Power/Reset/LED). 3x PCI Express x1 (Version 2
Before installing a modern graphics card, you must flash the system BIOS to the final available UEFI-compliant revision using your original processor and integrated display ports (VGA or HDMI). Firmware binaries can be retrieved through official Acer Support Portals or legacy archived databases for the Aspire M3985 or Gateway DX4870 system models.