My oldest laptop is an HP Pavilion dv7-1245dx with the Vista Operating system purchased new in 2007. Operated on and recharged many hundreds of times on one of my MSW inverters and it still has the original battery that's working just fine and so is the charger and the puter. Our HP 7 and our HP 8 and 8.1's also work fine on the MSW inverters.
Blaming the MSW inverter for your laptop failings is so misleading and a very long stretch at best. We have 6 puter systems we own and use. Usually 4 are always turned on. One desktop and 5 laptops and 4 of the are HP as is the desktop and one laptop is a Toshiba. Other than the desktop, all 5 of the others have gone in the RV's and plugged into the MSW's. We always take 3 laptops with us when we travel. Mine, the wife's, and one is a backup incase one other should crash etc. Of course, our Verizon Jetpack MIFI Hotspot too is always along as it will support up to 10 WIFI devices at the same time. Most CG WIFI really suck big time!
I don't have anything against a PSW inverter but why condem and badmouth and known MSW system that has proven to work fine for so many tens of thousands of users for over a decade or even 3 decades now? Note! They do still sell so many more new MSW inverters than the PSW inverters could every hope to as they are way overpriced (3-4 times the cost of an MSW) just to do the same task an MSW already does and has for decades now. You guys sure do humor me!!!