I agree with kemical on the real issue here, and that's the OP probably never ran the
COMPATBILITY TEST from Microsoft before attempting the upgrade from W7-->W10. If errors are returned on the machine hardware, drivers, or apps from the existing W7 configuration, that program is basically telling you to remove that hardware (mostly on a desktop), drivers, or apps, as they will most likely fail to work
AFTER a W10 upgrade. OP doesn't mention if he did this; so our assumption is generally a
"NO" he didn't. The
W10 COMPATIBILITY TEST is not 100% however, and the final methods for determination are in order:
(1.) check the computer or motherboard manufacturer website for W10 driver support, and
(2.) CALL the computer or motherboard manufacturer and
ASK them if your machine, that they can run by your computer or Mobo serial number, is W10 compatible.
Actually calling the computer or motherboard manufacturer is the final word on this. Most folks don't do this as they don't know that they can, or in many cases the effort spent trying to get through to some of these companies is massive and takes many phone calls and multiple days of calling. I rarely do this anymore, especially with the motherboard manufacturers as most of them are offshore and have no phone support--you get what you pay for!! Most of us Techs simply go with
Option #1 as kemical indicated and visit the website; if no W10 drivers are listed for that machine or mobo; the determination is it's simply not compatible, tell the Customer
"NO", and move on to the next Customer. Occasionally, I'll get an income challenged Customer who simply refuses to replace the machine to a new machine or motherboard since they can't afford to do so, and I'll monkey around with the drivers as mentioned by Sonny and others. I don't guarantee it will work; and if it doesn't behave on normal usage after the W10 update is completed, I simply return the machine and say
"sorry", you're either stuck replacing the machine or using it with the existing version of Windows on there (W7/W8x).
Lastly, OP can try to update his W7 to Win8 and then to W8.1 (not an easy task). If he can get his laptop to run 8.1, that is kernel-compatible with W10 and W10 native drivers may work on his laptop, but again, not guaranteed. [CAVEAT HERE IS THAT AFTER JULY 29TH 2016 AND THE END OF THE FREE TRIAL W10, MICROSOFT WILL NO LONGER GUARANTEE NATIVE DRIVER SUPPORT FOR COMPUTER HARDWARE!!]. If OP then got the 8.1 working and runs the upgrade, a post-July 29th Windows Update may inadvertently revert their Wi-Fi driver on that laptop and the wireless will never work again.
Last time I went through one of these deals with a netbook (Asus AspireOne), and finally got everything working on W10; it was still too slow for my Customer and he just gave the darn thing to me and went out and bought a W10 tablet! It still works (and on Wi-Fi), but can't add more than 2GB RAM, so it's slowwwww...
<<<BIGBEARJEDI>>>