How to reset BIOS password for HP Probook 6450b

Help in the links

https://h30434.www3.hp.com/t5/Notebook-Boot-and-Lockup/Bios-administrator-password/td-p/6856188

Some other ideas here

https://www.repairwin.com/how-to-reset-bios-password-hp-probook-elitebook-pavilion-laptop/

and some videos

https://www.google.com/search?q=hp+probook+11g2+reset+bios+password

....

There are no master password generators for ProBooks or EliteBooks.
You will need to contact HP.
http://www8.hp.com/us/en/contact-hp/ww-contact-us.html?jumpid=reg_r1002_usen_c-001_title_r0003
Or look at this link.
http://forums.mydigitallife.info/threads/49497-HP-Probook-Elitebook-BIOS-Password-Reset-Utility
Or replace the BIOS chip.
http://www.ebay.com/itm/HP-Probook-4310s-4410s-4510s-4710s-6440b-6445b-6540b-6545b-Bios-Chip-No-Pass...

Check out this HP Support document:

http://support.hp.com/us-en/document/c01867418

OMG DON'T TOUCH CHINESE BATTERIES!! Generally they just recycle old ones and stuff them into new cases! I've learned this from 2 costly experiences where 'new' chinese batteries have lasted about 2 months before dying. If you want cheap, reliable ones hunt around on ebay for ORIGINAL MANUFACTURER (HP Label) , SECOND HAND ones with guaranteed minimum life of say 1.5 hours.
Good Luck.

Inexpensive batteries are inexpensive for a reason. At best they will not work properly in your laptop, at worst, they could be a fire hazard. Cheap copies, bootlegs, will not last long, the connection may be different causing them to not interface with the Laptop. Pain and Heartache. Look here for a price comparison : http://www.google.com/webhp?source=search_app#q=hp+probook+6450b+battery&source=univ&tbm=shop&tbo=u&sa=X&ei=LAyzUf74BMq60AGYyoBg&sqi=2&ved=0CD0Qsxg&bav=on.2,or.r_qf.&bvm=bv.47534661,d.dmQ&fp=cf719c32e5effe38&biw=1188&bih=549

hyjacker moneef

there is no bios PW reset jumpers in laptops (toshsiba execpted)
the maker HP flat refuses to help, (this topic)
means they tell you to buy a new motherboard (wow)
so that leaves what?,
HACKING.
so google it.
some of these laptops have backdoor PW (bios)
and if you hit enter 3 times it shows a hinted PW code. if yes,, then.
then google this.
probook 6570b backdoor Password, reset

or pay these guys
https://bios-fix.com/index.php
and
https://bios-fix.com/index.php?forums/hp-bios-password-remove.237/

What have OS have you updated to? You can find drivers here: http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?prodNameId=4173770&lang=en&cc=us&prodTypeId=321957&prodSeriesId=4173642&taskId=135

4520s.
you failed because of one reason, you asked on fixya not HP'
why ask here, there are no HP(few) folks here, they are all over at HP, real forum.?
bios resets are tricky,
the new rules changed with UEFI BIOS and or TPM chips added.
back in 2007 the mobo had reset jumper, (mine desktop does)
but not my 2008 elitebook laptop, due to the TPM rules.

first the link to your books
https://support.hp.com/us-en/product/HP-ProBook-4520s-Notebook-PC/4145198

those cover most issues, you will have. all by HP direct,
page 126 here is not too clear;.
the answer is here
your PC is fully locked now, there is no way to reset it .
without HP direct intervention (fixya can never ever do that)
the send you a special binary flash file that only works on YOUR PC (a fact and is by DESIGN)

https://h30434.www3.hp.com/t5/Business-Notebooks/Probook-4545s-Bios-Password-reset/m-p/6350164#M147169


never use a BIOS password, unless you write it down and hide the paper in a book you know, where it is. (got books?) i know books are now (dead technology but)>?
if you guess and start flashing BIOS, you will BRICK THIS PC.

To reset the BIOS password read the information from this link.

In case of your laptop the easiest method would be using software from Hiren's Boot CD as it's pretty hard to open it up and reach for the CMOS battery or the jumper and I wouldn't recommend doing it especially if it's under warranty.

go to hp support enter your details it should give you the drivers needed if your machine is supported