Windows 7 Ultimate x64 BOOT Failure on HP ProBook 450 G1...

Question

Dear forum viewes and experts...
I hope you can provide me with your insights on this problem i am having...
I bought a new laptop HP ProBook 450 G1 (i5 4200M, 8GB RAM, 1TB HDD, 2GB ATI Graphics card). The laptop comes with DOS free operating system.
I installed Windows 7 Ultimate from ISO file on a USB stick, and then activated the Windows.
After updating all drivers and having a clean device manager with no hardware left as unknown, i figured out that the laptop fails to make a cold BOOT.
After several trials, and installations. the problem remained the same. I changed the installation to Windows 8.1 Pro and the problem remained the same.
On cold booting, the laptop after showing HP logo in start-up starts to show Windows Logo animation but in Super Slow Motion for about 6-8 minutes, then followed by strange sounds which force me to shut it down by pressing power button for long until it shuts down.
After huge number of trail and error, i found out that if I entered BIOS Setup (by pressing esc then F10) and then exiting it without doing any changes or even without saving, the Laptop boots Windows 7 very smoothly (in about 15-18 seconds) and works fine. it also can make endless number of smooth restarts without any problem.
If it is shut down then turned on, the boot failure is the outcome.
The only way to make a successful cold BOOT (i.e after a shut down) is to enter BIOS setup mode (by pressing esc then F10), then exiting it within seconds without changing anything or saving, then it boots smoothly.
I tried MBR fixes through command prompt in Recovery Mode, I tried to change booting to make it boot as LEGACY or UEFI Hybrid. The BIOS is updated to the latest frimware on HP website verion 1.2 dated 15 July 2014.
NO HELP.....All lead to the same disappointing result.
Any idea whether this is a hardware issue/software issue/BIOS issue?
Your insights will be highly appreciated

Answer 1

Hello,
I'd ask in the
Windows 7 forum on Microsoft Community.
As the Microsoft Community is on a different platform, we cannot move the question for you.
Once there, click on Participate near the top of the screen, and select 'Ask a Question' or 'Start a Discussion':
Karl
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