If you want ..you can boot up with a flat battery ..but you will have to set the time and date each single time you do it ..and it will never hold any settings or file associations for programs..To change the battery is simple ..It has a round flat battery on the motherboard..and you have to locate it ..and change it ..http://www.youtube.com/watch?v=r4fDSQap2Qothis video will make you an idea about how it looks like and how to remove it ..It has a safety system and need to be pressed aside..and will jump out ..The battery itself can be bought from any computer store ..and it sis very cheap .You should pay attention when you change it ..cause usually these batteries do not go flat for no reason ..but unless you leave your computer unused for a long time ..otherwise it recharges and works for years..What I mean is that the battery itself may not be flat ..but a contact issue ..or so ..and is discharging it ..Anyway after you replace it ..just restart ..it will ask you to press F 1 to go and set the date and time ..and you can do it..or just set the time and date in windows later..but ..you still have to press that key it asks ..and go to bios ..and in there either set the time or just press F10 to save the changes and go on with the windows boot..(pressing f10 is needed so it will recognize the time being selected..If you just save settings but not select the time and date ..do it right the way in bios cause some programs will not work without it ..)have a nice day ..and please don't forget to rate my answer..
Is is probably too old to take Win 10. Also, USB support normally starts once Windows is loaded. During Boot up, it looking for a hard drive or Bootable CD Media.
By default, the notebook can start only from a bootable hard drive
or bootable drive medium in the notebook.
https://www.google.com/search?q=Compaq+evo+n115+boot+from+usb
It is 21 years old!!
From the Service manual
https://www.manualslib.com/manual/71736/Hp-Compaq-Presario-F700.html?page=43#manual
Unknown user password
If the computer you are servicing has an unknown user password, follow these steps to clear the password:
NOTE:
These steps also clear CMOS.
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
1.
computer on, and then shut it down through the operating system.
Disconnect all external devices connected to the computer.
2.
Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
3.
then unplugging the AC adapter from the computer.
Remove the battery (see Battery on page
37)
4.
Remove the real-time clock (RTC) battery (see RTC battery on page
44)
5.
Wait approximately 5 minutes.
6.
Replace the RTC battery and reassemble the computer.
7.
Connect AC power to the computer. Do not reinsert any batteries at this time.
8.
Turn on the computer.
9.
All passwords and all CMOS settings have been cleared.
Videos as well
https://www.google.com/search?q=Compaq+F700+reset+admin+password
..
Windows 7 should be the OS.
If you go to safe mode, it should complete booting and then you can list the errors but I suspect there is a driver error. Maybe the wrong version in there.
Hopefully it will still work with a new battery and power supply to charge it.
They were quite reasonable back in 2008. Win7 software (no longer supported) and fairly fast.
Hey readersFollow these steps to troubleshoot that issue.
Warning -Please don't your that tip for illegal work . Its only for personal and training purpose.
You can also follow my tip
It might be a connector cable between the mother board and the power supply has worked loose when the machine was moved. That blinking light appears to be on the power supply.
While there might be other causes, I suspect the power supply needs to be replaced.
You could take up considerable time and try to reseat everything and check all the connections and even put new thermal paste between the CPU and heatsink, but in the end, I suspect putting in a new (or used of the same type) power supply will be the fix. If the power supply has failed before damaging anything, that at least would be good news.
2006 PC (HP.coM) 16 years old.. ouch.
XP (microsoft) is now a horrible virus magnet, and there is ZERO support now, are you using the last XP earth 2020???
gee google that. 2001 to 2007 was XP rein , vista 2007
I bet there are 1millons of web site still with XP usage .(old topics)
google them. but Microsoft purged theirs.
it is not sold at all, so how in the world can you get the installer on any pen drive, and XP installed from CD not pen..
worst of all XP installer, can not us 99% of all USB ports and then only half after the install (unless you force them via F6 and floppy drive with xp drivers on the floppy for THIS PC)
to use any relic PCs run LINUX> not XP
Question edited for clarity, and Maker name.
Question moved from BBC Computers.
BBC Weather and Quora and both secure and have an http*S* security certificate. My guess is that you have a third party security app, or worse, two of them, not understanding status or fighting with each other.