must use win7 for work

[simplesimonj]

HI, I run a high spec laptop and must use win7 and want to buy a "better" machine, should I buy a m/c with win10 installed? or leave blank and install win7 myself?

 

[Swirlz]

Install it yourself. Buying it pre-loaded will jack up the price because the manufacturers want a profit

 

[USAFRet]

HI, I run a high spec laptop and must use win7 and want to buy a "better" machine, should I buy a m/c with win10 installed? or leave blank and install win7 myself?

It's tough to find a bare laptop with no OS, that might meet your exact specs and need.
And anything new may not run well with Win 7.

A laptop with an OS preinstalled is generally not a lot more expensive than one without.

Why the requirement for Win 7?