Hp Elitebook 8440p help ! Bios issue ? URGENT Please Help

[Rickys]

Hi Guys

Can someone please tell me I have not killed my laptop! - HELP

OK all was good solid machine perfect until today

1.os was 32 bit windows 7 32bit OK
2.decided to upgrade windows 64 bit fresh install - why since PC has 8gb only sees 4gb
3.boot from genuince ms win 7 CD 64 bit - gets to starting windows then nothing !
4. Insert 32 bit win cd - new install works no problem
5. Looked in bios and reset values to default

PROBLEM  

after reboot and reset bios to default
no screen
no beeps
laptop in power up down loop
powers up light flash- hdd fires up then powers down - then does it again and again !
now in a loop of trying to boot -power down autostarts again the loop

Things I have tried with my little knowledge
Found this site - Hi Brain and all members !!
1.remove all usb items
2.remove hdd and ensure no conncetion problem
3.reset ram not loose

Still the same

I am a student and now in big trouble PLEASE Help me to reslove !!
Thanks

[zINc]

Possibly bad RAM make a boot disk and run Memtest86+ test.
https://www.memtest.org/

(11-09-2014, 08:01 AM)Rickys Wrote:  Hi Guys

Can someone please tell me I  have not killed my laptop! - HELP

OK all was good solid machine perfect until today

1.os was 32 bit windows 7 32bit OK
2.decided to upgrade windows 64 bit fresh install - why since PC has 8gb only sees 4gb
3.boot from genuince ms win 7 CD 64 bit - gets to starting windows then nothing !
4. Insert 32 bit win cd - new install works no problem
5. Looked in bios and reset values to default

PROBLEM  

after reboot and reset bios to default
no screen
no beeps
laptop in power up down loop
powers up light flash- hdd fires up then powers down - then does it again and again !
now in a loop of trying to boot -power down autostarts again the loop

 Things I have tried with my little knowledge
Found this site - Hi Brain and all members !!
1.remove all usb items
2.remove hdd and ensure no conncetion problem
3.reset ram not loose

Still the same

I am a student and now in big trouble PLEASE Help me to reslove !!
Thanks

[Rickys]

Hi Zinc
The problem is that I can not see the screen to get to the bios or boot up ?

[GuiltySpark]

Have you tried taking out the 8GB RAM and just using 4GB just to see if it will then boot?

[zINc]

Try an external screen plugged into the side.

[Rickys]

Sorry Its still the same ?
Can any one assist ?
I have tried everything now

[GuiltySpark]

Have you tried the RAM change I posted?

[zINc]

In my opinion you either try replacing the RAM since you cant test it. (external screen worked?)
or you laptop is overheating causing the VGA chip to behave erratically which would mean taken apart the mobo
to clean out the fan and replace the thermal compound.

[Britec]

Hi Ricky, Welcome to the forum.

So you he reset to default and now no beep or display. (It could be at that particular point something failed) Please try these steps below)

1. Remove "Power Cord" and "Battery" and drain all the power from the laptop by holding the power button for 30 seconds to 1 minute (you're  be surprised how many times this has worked for me)

2. Corrupted RAM or Memory slot could be corrupted. Change the RAM and change RAM slots. If you don't have a spare RAM, you're need to buy one. When ordering, make sure you buy the correct type.

3. Use a external monitor to test the display on the laptop. Press Fn+F4 keys 

If the steps above did not solve your laptop problem, its not good news, it could be a issue with any of these hardware: back light, inverter, video card, motherboard, or bad cable or connection.  

One last thing to try, hold a flashlight up to the laptop screen and check if there is any faint display on the screen. (if there is a faint display, its back light or inverter.)

Hope this helps.