Windows 8.1 Laptop Lagging?

I have recently wiped the hard drive. I had to put in another hard drive. I will use minecraft as an example, but I used to be able to run even small modpacks with good fps (around the 30's). However, now I have even more space on the hard drive and I can't even play the basic game with terrible graphics and everything on low. (I'm only getting 15 fps at the most) Needless to say it is impossble to run any modpacks as the basic game is not playing as well as it should be. The specs aren't brilliant but should run minecraft WELL. I have updated everything and even turned off background programs, I run with battery set to performance and the computer set to performance. I have also disabled any 'graphical' options like shadows on windows and things like that.

Added (1). I have also allocated minecraft more RAM, I think about 5.

Added (2). I think I should say that I have downloaded some VERY nice looking apps from the windows store, and they run perfect. The graphics are comparable to console and it runs smoothly. Yet it can't play minecraft with normal settings?

Guest

Well I played minecraft(only for a few hours though) in 8 and it ran smoothly, no issues…
But after few days had the same issue, my Lap used to get too hot and even Minecraft started to Lag like hell, so did every other game. I thought my Lap had seen an end to it's days of gaming, but turns out the problem was DUST accumulated in the heat sink, and also I had to replace the Thermal paste.Well after that everything is back to normal.
So I suggest you to 1st download "Real Temp" for temperature monitoring, here's the link
http://realtemp.en.lo4d.com/
If it turns out that heating is problem, then your Lap needs a servicing, If not then there's a Hardware issue I guess. Hope this helps.

Lohit

I have to say I was a bit skeptical at oggus.com when I started to look around for some keys to change the OS on my new computer back to Windows 7 from the 8.1 it came with, I had previously tried to upgrade the software on my computer from 8.1SL to the pro edition so I could get english on my computer, well that was a complete bust and then I saw a review for oggus.com and decided to check them out, I paid for the key and received in short order the d/l link and key, everything went so well that I decided to add Office Pro 10 after and that went equally as smoothly, I highly recommend oggus for your software needs, they are friendly and responsive to all your needs.

Dotson