when i try to play minecraft it will not load.

from the dev console

[12:01:32 ERROR]: Couldn't launch game
java.io.IOException: Cannot run program "C:\Program Files (x86)\Java\jre7\bin\javaw.exe" (in directory "C:\Users\Dylan and Billy.Homecomputer-HP\AppData\Roaming\.minecraft"): CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessBuilder.start(Unknown Source) ~[?:1.8.0_05]
at com.mojang.launcher.game.process.direct.DirectGameProcessFactory.startGame(DirectGameProcessFactory.java:14) ~[launcher.jar:?]
at net.minecraft.launcher.game.MinecraftGameRunner.launchGame(MinecraftGameRunner.java:205) [launcher.jar:?]
at com.mojang.launcher.game.runner.AbstractGameRunner.onDownloadJobFinished(AbstractGameRunner.java:177) [launcher.jar:?]
at com.mojang.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:122) [launcher.jar:?]
at com.mojang.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:12) [launcher.jar:?]
at com.mojang.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:86) [launcher.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_05]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_05]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_05]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_05]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_05]
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessImpl.create(Native Method) ~[?:1.8.0_05]
at java.lang.ProcessImpl.<init>(Unknown Source) ~[?:1.8.0_05]
at java.lang.ProcessImpl.start(Unknown Source) ~[?:1.8.0_05]
... 12 more
[12:01:32 INFO]: Deleting C:\Users\Dylan and Billy.Homecomputer-HP\AppData\Roaming\.minecraft\versions\1.7.9\1.7.9-natives-1124172912079747