Low memory problems - Dell Studio 17 Laptop

In your case, you can firstly try some partition resizing tools to see whether it is only caused by improper partition space division, like this:
http://www.resize-c.com/
But, if it is not caused by improper partition space division, you'd better spend some money to buy a larger drive to go on.
NO matter which you are going to use, always copy all your important drive data out in case of data loss.

I have ever tried to resolve computer drive low disk space problem by following a video tutorial:
https://www.youtube.com/watch?v=6jCeT7CbsKk
If you do find there is free space left on the same physical drive, you also can follow this video to take chances.
Of course, firstly back up all drive data in case of data loss.
If it is necessary, chance another new computer drive for the future use.

System partition has given this low memory problem when trying to install a game or program there?
Immediately check your laptop drive space and see how much space it has left.
If there is still much free space and only this system partition has this low space problem, you can open Disk Management tool to move all free space to this system partition or simply use some partition resizing tool to resize all partition space to resolve this low memory problem step by step.
Of course, before taking any measures, make up and double check your partition data backups well in case of data loss.

Low memory problems could be low virtual (hard disk) memory.
Hard disk maintenance will free up hard disk memory space.
Hard disk maintenance should be carried once a month to make your computer run efficiently. This removes redundant and temporary files, recovers disk space and speed up hard disk access. Disk Cleanup should be done first - Click My Computer - then right click on the C drive then click Properties, then click Disk Cleanup - let it examine the C drive then it will calculate the amount of disk space it will recover, tick all the boxes to recover the maximum disk space and then Click OK and then Yes to perform these actions. If you have a D drive then repeat these steps on this drive too. Next the C drive needs to be Defrag. This process converts fragmented files into continuous files and this speeds up disk access and makes the hard disk not work as hard. Click on Start - All Programs - Accessories - System Tools - Disk Defragmenter - click to highlight the C drive and click Analyse - then click Defragment. When this is completed repeat these steps for the D Drive if you have a D drive. Disk Cleanup and Defrag can take a long time to complete, especially if these tasks have not been for a long time.