I have an Aspire 4752G running Windows 10. After doing updates, my laptop rebooted and I noticed it was taking a long time just stuck on "getting windows ready", so I just left it running. When I returned, it was stuck on the initial acer boot screen (the one with the Acer logo when you first turn on your PC), with the progress bar at the bottom filled to 75%.
No matter what I cannot get passed this screen. Pressing F2 for bios or F12 for multiboot does nothing. I can adjust the brightness using Fn controls but thats about it. Here is what I've tried so far with no luck:
1) Removed battery and used only AC power.
2) Removed AC and used only battery power.
3) Removed each stick of RAM separately.
4) Removed keyboard, HDD and DVD drive.
5) Removed CMOS battery and turned on laptop to clear BIOS. BIOS was cleared (multiboot option disappeared) but still stuck on same screen.
As far as I could work out, the last option for me to try was re-flashing the BIOS. I downloaded the latest BIOS zip file for my model from Acer's support site. After extraction, inside the DOS folder it contains a few files including a .ROM and .WPH file.
I tried formatting a 2GB USB to both FAT and FAT32 and on different occasions copied all the files inside the DOS folder as well as only the .ROM and .WPH files to the root of the USB. I plugged the USB into the left side of the laptop with the battery and AC power removed. While holding down Fn+Esc I connected AC power and turned on the laptop. The screen remains black but the power LED and USB LED turn on. Apart from the USB's LED blinking once briefly, nothing else happens.
I then tried using the Crisis Recovery Disk program to format the USB and rename my .WPH file to BIOS.WPH along with two other files that the program places on the USB. Once again, nothing happened.
Finally, I used the Phoenix Tool program to detect the type of BIOS that my .ROM and .WPH files belong to. It indicated that my actual BIOS type is INSYDE and not Phoenix. After some searching on the internet, it seems that for INSYDE based BIOS, one has to simply place the BIOS file on the root of a USB (FAT or FAT32) BUT the file MUST be correctly named for the laptops BIOS recovery to see it. I suspect that this is why nothing is happening when I try flashing the files.
EDIT: I just noticed that it says Phoenix at the bottom right of the Acer Logo startup screen.
The .ROM and .WPH files downloaded from Acers site are named "JE40124". I have no idea how to find the correct name for them. Apparently using the Phoenix Tool program provides the correct filenames to be used but I don't see this anywhere when I use it and select my .ROM or .WPH files as the source (but I may be doing it wrong).
Please can someone help me with other suggestions on how to get passed the stuck Acer screen or on how to sucessfully flash the bios (I don't know if that could solve the issue, maybe?).