(the file may be different depending on the model)Ĥ. Copy the file 306DF15.FD to USB disk’s root directory and rename it to 306D.bin. Actually this model can be found in “BIOS Setup” (we can’t start it as the CMOS is bad)ģ. You may try one by one to see which model your computer use. There are two model for Compaq CQ35 computers, so there are two. For my computer and the BIOS version I use, the two files are 306DF15.FD and 306EF15.FD. Unzip WinFlash.exe using a program like WinRAR. In the directory selected, we can get WinFlash.exe. Select a directory to store the files and you can close the program. Execute the BIOS update file on another computer. Get the BIOS image from HP’s website (I use F15 version).ĭownload the BIOS update file from HP’s website (an exe file). Format the USB flash disk’s filesystem to FAT16 on another computer.Ģ. The steps to recovery the BIOS are as follows.ġ. You need to prepare a USB flash disk and another computer that is connected to the Internet (we need to download the BIOS image from HP). I will introduce the procedure to crisis recovery my HP Compaq laptop. I finally managed to recovery the BIOS with a help of USB flash disk. But after searching on the Internet and find there is a “crisis recovery” mechanism to recovery the BIOS even the CMOS don’t work.
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