Hi,
I have an Asus K55VM laptop. It's a Ivy Bridge Core i7 with NVidia 630M on-board. Last week I upgraded my Windows 7 to Windows 8.1. Since the upgrade left my machine in a worse state, I decided to do a fresh install. My source media was a bootable flash disk.
Now trouble started when I went for the fresh install. Since the laptop didn't boot from the USB,
1) I had to go and change the boot order in the BIOS
2) Along with boot order, I also enabled the option of Launch CSM
Once I saved the settings and exited, the laptop restarted, but...
1) Hung up on blank|black screen even before entering BIOS.
2) The power LED indicator stays on and I can force shutdown the laptop by pressing the power button for 7 seconds
3) CTRL-ALT-DEL is unresponsive which makes me think that BIOS has not been entered.
4) Apart from the Power LED, only the Num lock LED is on and I can't seem to turn it off/on.
This is what I did when I assumed that it must be a BIOS issue (based on various forum posts, a few of them being right here): (EDIT: As far as I remember correctly, it is an AMI BIOS)
1) Formatted a USB with FAT32 and copied the BIOS bin file provided by Asus ( http
/support.asus.com/download.aspx?SLanguage=en&p=3&s=386&m=K55VM&os= ) to the root folder of the USB and made various copies with different names.
2) Restarted the laptop, <ctrl>+<home>, no help!
3) Disconnected the battery and ran on AC power only.
4) Discharged the circuit by pressing the power button for a while.
I decided to tear apart the laptop and break it down to barebones to isolate the issue.
5) Did a BIOS reset by discharging the BIOS/CMOS battery.
6) Removed the hard drive.
7) Did the RAM dance (I even ran it without the RAM, not a beep!)
8) Attached an external monitor to see if it is display issue, the monitor is as blank as my laptop screen.
9) Disconnected everything from the motherboard (I mean everything: the keyboard, the touchpad, the ODD, the HDD, the laptop screen, the wireless module) Only kept the external monitor attached to VGA/DVI port.
(EDIT: Forgot to mention, fan stays on too)
10) Powered on barebones, and still nothing. Not a beep and the same leds are on. (EDIT: Reseated RAM module again and NUM lock LED goes off now)
11) Right now, I have disconnected the Mobo from all power sources (including the BIOS battery) and kept it overnight.
I mean to check power an connections with a multimeter now, but that's as far as my expertise goes. I still have a nagging feeling that it must be the BIOS, but whatever I did, I couldn't restore it.
Anyone can help me figure out whether it is a bust Mobo, BIOS problem or something else. Any help will be greatly appreciated.
Regards,
Arnolin
I have an Asus K55VM laptop. It's a Ivy Bridge Core i7 with NVidia 630M on-board. Last week I upgraded my Windows 7 to Windows 8.1. Since the upgrade left my machine in a worse state, I decided to do a fresh install. My source media was a bootable flash disk.
Now trouble started when I went for the fresh install. Since the laptop didn't boot from the USB,
1) I had to go and change the boot order in the BIOS
2) Along with boot order, I also enabled the option of Launch CSM
Once I saved the settings and exited, the laptop restarted, but...
1) Hung up on blank|black screen even before entering BIOS.
2) The power LED indicator stays on and I can force shutdown the laptop by pressing the power button for 7 seconds
3) CTRL-ALT-DEL is unresponsive which makes me think that BIOS has not been entered.
4) Apart from the Power LED, only the Num lock LED is on and I can't seem to turn it off/on.
This is what I did when I assumed that it must be a BIOS issue (based on various forum posts, a few of them being right here): (EDIT: As far as I remember correctly, it is an AMI BIOS)
1) Formatted a USB with FAT32 and copied the BIOS bin file provided by Asus ( http
/support.asus.com/download.aspx?SLanguage=en&p=3&s=386&m=K55VM&os= ) to the root folder of the USB and made various copies with different names.2) Restarted the laptop, <ctrl>+<home>, no help!
3) Disconnected the battery and ran on AC power only.
4) Discharged the circuit by pressing the power button for a while.
I decided to tear apart the laptop and break it down to barebones to isolate the issue.
5) Did a BIOS reset by discharging the BIOS/CMOS battery.
6) Removed the hard drive.
7) Did the RAM dance (I even ran it without the RAM, not a beep!)
8) Attached an external monitor to see if it is display issue, the monitor is as blank as my laptop screen.
9) Disconnected everything from the motherboard (I mean everything: the keyboard, the touchpad, the ODD, the HDD, the laptop screen, the wireless module) Only kept the external monitor attached to VGA/DVI port.
(EDIT: Forgot to mention, fan stays on too)
10) Powered on barebones, and still nothing. Not a beep and the same leds are on. (EDIT: Reseated RAM module again and NUM lock LED goes off now)
11) Right now, I have disconnected the Mobo from all power sources (including the BIOS battery) and kept it overnight.
I mean to check power an connections with a multimeter now, but that's as far as my expertise goes. I still have a nagging feeling that it must be the BIOS, but whatever I did, I couldn't restore it.
Anyone can help me figure out whether it is a bust Mobo, BIOS problem or something else. Any help will be greatly appreciated.
Regards,
Arnolin
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