Re: hp elitebook 840 g4 need password unlock
I'll have a look - there's a strong possibility the bios chip isn't sat quite in the right place - it just sits on top of the board rather then having legs going through it - so getting it in the right place seems like a bit of hit and miss...
GrahamA
New Member
Last Activity: 12-15-2019, 04:51 AM
Joined: 11-10-2019
Location: Winsford
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Re: hp elitebook 840 g4 need password unlock
I managed to get it off the motherboard and flashed it using my Pi - unfortunately on reconnecting everything the laptop doesn't turn on - so I guess I've messed something up somewhere.
I may give up.
The power light (the main one on the switch) and the Caps Lock light go off then come on again in a cycle.
I've had a hunt for whether this means something but am find mixed answers.Leave a comment:
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Re: hp elitebook 840 g4 need password unlock
I'm obviously new to all this and doing things the wrong way.
The clip I'm trying to use is attached to a Raspberry PI - I thought that gave it all the power it needed ?
In the hope of getting to the bios chip a bit better I've removed the motherboard.
I've take pictures of the chip - I've no idea how to get a clip on this so contact is made correctly and unsure whether I can heat gun the chip off the board.
Has anyone any experience of dealing with a similar chip ?...Leave a comment:
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Re: hp elitebook 840 g4 need password unlock
Pm’d - many thanks...Last edited by SMDFlea; 04-10-2023, 12:32 PM.Leave a comment:
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Re: hp elitebook 840 g4 need password unlock
I'm still on this - I can't get the SOIC clip to connect - what bits are you suggesting I cut off ?...Leave a comment:
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Re: hp elitebook 840 g4 need password unlock
I've attached a picture of the chip ... does this look correct ?...Leave a comment:
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Re: hp elitebook 840 g4 need password unlock
Perfect - thanks guys - I thought that was the one - I’m trying to use a clip but having a few problems - I’ll try again :-)Leave a comment:
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Re: hp elitebook 840 g4 need password unlock
Can anyone tell me where the bios chip is on the HP Elitebook 840 G4 ? I've trawled through the service manual but can't see it referenced anywhere.
Any help greatly appreciated.Leave a comment:
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Re: New Members - please post your introductions here
Hi All :-)Leave a comment:
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