Unlock code for inspiration Dell laptop 3521 - Dell Cell Phones

check this one mate:
http://www.dell.com/support/home/us/en/19/product-support/product/inspiron-15-3521/drivers

There is a WIKI knowledgebase article on Dell error codes here

Beep Codes and PSA Diagnostic Chart Desktop Wiki Desktop Dell Community

It say this is due to "Graphics test timed out waiting for keyboard response."

Dells advice is to "Remove and reinstall the video card on a Desktop Computer for this error codes."
You can get a solution for the PSA error code at this Dell website.

Dell Technical Support

hope it helps Dell Inspiron 15 3521 5521 LCD Screen Replacement Video Tutorial

you can always find dell drivers on their website. the ones for ubuntu will not work in windows. windows 7 64 bit are on this page http://www.dell.com/support/troubleshooting/uk/en/ukdhs1/Product/inspiron-15-3521

I you need to unlock the phone you should buy an unlock code for your HTC Inspire 4G from a trusted and safe HTC unlock service. The one i recommended have good prices.
After you have the code( just a few minutes), insert different network sim card. it will ask you for the unlock code. enter unlock code. Your HTC Inspire 4G will be unlocked and able to accept any GSM Sim card.
http://www.htcimeiunlock.com/htc-inspire-4g-unlock
http://support.htcimeiunlock.com/entries/20121711-Unlocking-and-using-the-AT-T-HTC-Inspire-4G-in-Europe

Hi, you can get the unlock code for a HTC INSPIRE 4G from www.MobileUnlockSolutions.Com at affordable cost with free unlocking instructions. This site is one of the reliable source to get accurate unlock code at affordable cost. All the best mate.

To Unlock HTC Inspire 4G use the unlock code.Get the unlock code from the site Wickedunlock and Unlock it easily.

Dear friend, i suggest you to not to use free unlock code in your HTC INSPIRE. because free unlock code is not trusted to unlock your HTC INSPIRE.if you want to unlock your HTC. find your HTC unlock CODE here . this site offer cheap price to unlock code.i hope this will help you :)

You won't get unlock codes for free, and people who claim to provide Free Unlock Codes for HTC usually give the wrong codes and after 3 or 5 wrong tries your phone will be permanently locked :)

I got my Desire unlocked from here, Fast and reliable service :)

http://www.myhtcunlock.com

In my expirience there are so many site available. if you want to unlock your HTC visit this site . this site provide Unlocking codes foe better price. and support is GOOD :)