My laptop upgraded to windows 10 and might have a virus?

If you got upgrading without your knowledge or permission the best thing is to go back to your original OS. This is just M$ using its strong arm tactics to force people into using 10. They are getting VERY desperate to increase the market share and make it look like 10 is gaining ground.

Going back to your original OS is your best bet. Windows 10 is a nightmare of an OS that is going to get worse as time goes by. Between the forced updates to the built in back door you will have no idea what is happening to your puter.

If it has been less then 30 days try this. Back up everything important and then try clicking Start, Settings, Update & security, Recovery, Go back to (last version)

If it has been more then thirty days then you're out of luck and are going to have to do it the hard way. You wont be able to use the recovery partition since you upgraded to 10. M$ deletes it to keep you from going back. It is my opinion that M$ deletes the recovery partition to keep people from going back to their old OS. I guess if you write as many bad OSes as they do you got to find a way to make it look like everyone likes it. If M$ deleted your recovery partition then you will need to order the recovery DVD's from the manufacturer. Some manufactures still have recovery DVD. Post your make and model and I'll see if they are available.

If you had Windows 8.1 you can use the link below to go back. You need to back up everything up and make sure you have a good product key on the bottom of the lappy. I do suggest that you download all your drivers before attempting this.

http://windows.microsoft.com/en-us/windows-8/creat...

If you had Windows 7 then posts the make and model and I'll see if it can be done. We have had a lot of success so far getting people back to 7 if you are willing to do the work.

Make sure when you go back that you DO NOT let these updates in. M$ is now hard coding spyware ( back door ) into Windows 7 and 8. Look for these updates and see if you have them. KB 3068708 KB 3022345 KB 3075249 KB 3080149 These updates give 7 and 8 the same spying capability as 10 has.

This error may occur due to the iastor.sys driver, which is not fully compatible with Windows 10.

Microsoft is currently investigating a solution to prevent the driver from being migrated when upgrading to Windows 10. For those of you already on Windows 10, you can work around this error by replacing the problematic driver with the Microsoft storahci.sys driver by following these steps:

Right-click the Start icon and select Device Manager.

Expand IDE ATA/ATAPI controllers.

Select the controller with “SATA AHCI” in its name (such as Standard SATA AHCI Controller). To verify that you’ve selected the right controller, right-click the controller, select Properties, click the Driver tab, and then Driver Details. Verify that iastor.sys is a listed driver, and click OK.

From the Driver tab, select Update Driver…

Select Browse my computer for driver software.

Select Let me pick from a list of device drivers on my computer.

Select Standard SATA AHCI Controller.

Click Next, then Close, and then restart your computer.